see if it has a serial no. on the stern right upper corner. many if not all mfgs. have there name abbreviated in the no. if there is no number it could be that the boat is pre1974+- or it is inside on the hull. the only other way is to contact the owner.
thanks...went and saw it but just not what we want for a day sailor for the family....looking for a bigger cock-pit and really don't need such a big cabin....for $2800 was a hell of a boat..lots of extras
saw a '62 CAL 24 right after it with a CAL 25 Mast....but not sure yet
Just after my signature is a link or two about boats and a book recommendation.
Good luck in your search. There are a lot of production boats with large cockpits and it truly does matter where you'll be sailing and what you'll be using the boat for.